LU82551QM Intel, LU82551QM Datasheet - Page 51

• Manufacturer Part Number: LU82551QM
• Manufacturer: Intel

Specifications of LU82551QM

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 196
• Lead Free Status / RoHS Status: Compliant

8.0
8.1
Datasheet
Manageability Functionality
The 82551QM acts as an SMB slave when receiving alert information and as bus master to collect
information.
Alert Standard Format
The 82551QM supports the Alert Standard Format (ASF) Specification, version 1.0 to monitor the
health of systems connected to the network, including desktop, workstation and server systems.
Intel’s ASF hardware and software enables all systems on the network to report advanced warning
and system failure messages to a network management console, in the powered-up, powered-down,
and pre-boot state. This data network allows an IT manager to use ASF to remotely perform
corrective action on a system.
An example of how ASF adds values to a managed network environment is realized when a system
cooling fan fails. The client sends an alert to the network management console. In turn the network
IT Manager uses the remote control capabilities of ASF to shut the system down to prevent if from
overheating. Another example would be if the operating system hangs. The network manager can
re-boot or re-start the system remotely to recover the system. Both of these usages are performed
by the IT Manager without leaving his desk.
ASF is based on Intel’s Alert on LAN* 2 technology but adds standards-based interfaces and
packets. ASF incorporates the System Management Bus, version 2.0 to monitor the system and
detect hardware failures. SMB sensors are placed on the motherboard to detect hardware failures
that include temperature, fan, and voltage failures. When a failure is detected, ASF requires a
Platform Event Trap (PET) packet (for example, SNMP or UDP packet) to be generated to inform
the network management console. These bit-based packets are lightweight because they are
generated in the powered-down state or boot sequence. In the OS present state, ASF uses the
Common Interface Model (CIM) to interact with software components. All warning or failure
messages are CIM based.
ASF provides pre-boot Firmware Progress messages and Firmware Error alerts. The Firmware
Progress messages detail the progress of the system BIOS as it is running. The firmware error alerts
detail hardware failures that the BIOS detects as the system is booting. The Watchdog Timer and
the Watchdog Register are used to deliver the alerts to the network management console even if the
system fails to boot. The ASF specification supports over twenty-five firmware messages and
firmware error alerts.
The system is monitored through SMB sensors, which may push alerts. Otherwise, the 82551QM
polls the sensors. When an alert is detected the 82551QM generates a PET compliant packet and
sends it to the network management console. Intel’s 82551QM implementation also supports
Remote Management Control Protocol (RMCP) features such as heartbeat, LAN leash and
presence ping/pong, along with the boot path definitions. The heartbeats and LAN leash alerts are
supported in both the powered-up and powered-down state.
Networking Silicon — 82551QM
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